Hi, I have searched around but i didn't find a proper solution for my issue

the font size inside the textboxes should be dynamically, so if someone resize the images, the font size resizes as well.

Any solutions?

I'm afraid you'll need to be more specific. I'm not sure if this will answer your question, but for what it's worth, here are a couple of tips.

You can make text larger or smaller by adjusting the size of the font, either on the control bar or in the Text and Font dialog. Or if you want to adjust it dynamically, you scan switch to the Selection tool, and use the scaling handles (arrows) (hold Ctrl key to keep proportions).

Otherwise, either screenshots or an SVG file showing what you want to do, will help.

You can select multiple objects at once, and use the Selection tool to resize them all by the same amount.